Draft connection for plows.



J. W. GAMBLE.

DRAFT CONNECTION FOR PLows.

APPLICATION FILED MAR. 21. I914- W w 9,W mm 9lN k v 7 0 .MJ .0 3 I 6 6 a 1. 7W 9 my 5 v MM W. 1.

J. W. GAMBLE.

DRAFT CONNECTION FOR FLOWS.

APPLICATION FILED run. 21. I914.

Patented Oct. 9. 1917.

ZSHEETS-SHEE'I' 2.

JOSEPH w. GAMBLE, onoMAHA, NEBRASKA, ass'renon fro ILLINOIS IRON & BOLT COMPANY, or CARPENTEBSVILLE,ILLINOIS,

nnnrr comvnc'rron Fora rnows.

To all whom it may concern:

Be it known that I, JOSEPH. a citizen of the United States'of America, and resident of Omaha, Nebraska, have invented a certain new and useful Improvement in Draft Connections for Plows, of which the following is a. specification.

My invention relates to an improved draft connection for wheeled plowsthat is, -to improved means for connecting the head of the plow with the usual evener; bar to which the horsesi are attached.

In four horse wheel plows, it isdesirablethat the furrow horse walk in the last or open furrow and that-the remaining horses walk on the unplowed ground. 1 This offset position of the horses thrusts the center point of the evener' bar to a point ofiset to- -ward the land from thecenterline of-the plow. If connection is .made with the evener bar at a point offsettoward the furrow from the center of the evener bar, so that it is connected directly in line with the center of the plow, the draft is unevenly distributed between the horses.

tained at the center of the evener bar, so as to maintain an equal draft. to thehorses, then .this offset connectionproducesa side thrust toward the, furrow.

The object of my invention is to provide means for connecting the offset center of theevener bar to the head of the plow so that any side thrust is avoided, and yeton account of the connection beingmade to the center of the evener bar the draft between the horses is maintained equal.

My invention will be more clearlyunderstood by having reference to the accompanying drawings, in which- Figure, 1 is a plan view showing thehead of the plow with my i'mproved draftconnection attached.

Fig. 2 is a sectional view takenv on the line 2-2 in Fig. 1, looking in-ithe directiOn of the arrows.

Fig. 3 is a sectional view taken on the line 33;in Fig. 1, looking in thedirection of the arrows.

Fig. 4 is a slightly modified form invention.

Fig. 5 is a sectional view taken on the line 5-5 in Fig. 1, looking in the direction of the arrows.

In Fig. 1, I have illustrated a portion of of my Specification of Iiet'tersriatent. Application filed March-21, 1914. Serial No. $26,174:.

W. GAMBLE,

plow.

If, how-' ever, the connection to the evener is mainratenteti 0a. 9, 191a.

a -:plow comprising the furrow beam 6 and landside beam 7, connected together by the cross member 8 which forms the head of the Secured .to the head of .the'plow are a pair of clampingfmembe'rs'9 and 10, secured at their opposite ends to a cross clevis 11. Pivotally connected at the point 12 to the furrow end of this clevis and substantially at a line with thezfurrow beam 6, is a main member 13 which consists of a broad body portion which extends forwardly and is provided with a. downwardly extending forward end 14.

This member 13is provided with a rearward extension 15 which extends rear? wardly toward the landside. and is provided with a bearing 16 which is adapted to bear against the head of the plow 8 at a point on the landside of the center line of the plow. Pivotally connected to this member 13,,near its forward end, is atransverse arm 17, the opposite .end ofxwhich arm is connected by the clevis 18 to. the main .evener bar 19, to which the double trees 20 are connected in the usual mannen Located just to the rear of this arm 17 there is a second transverse arm 21, likewise pivotally connected to the. member 13. A'link 22 is provided, which link is pivoted at its forward end to the, transverse arm 17, and then extends rearwardly and toward thelandside and ,is

pivotallyconnected at its rear end to the landside of the arm 21.. A second link 23 is provided which is pivoted at its forward a forward direction about its pivotal point of connection withthe main member 13, and this. movement of the arm 17 causesthe link 22 to straighten ,toward. the land. This movement produces a side pull toward the landon the arm 17, and in this manner the pull is transmitted through the arm 17 to the member 13 to the point of connection 12that is, the pull comes from a point substantially in line with the furrow beam of the plow. A certain amount of pull is also transmitted from the arm 17 through the link 22, arm 21, link 23, to the head of the plow adjacent to the landside beam. This pull on the landside of the head of the plow, however, is somewhat counteracted by the compression produced by the bearing 16 pressing back against the head of the plow.

It will thus be seen that by this construction, I obtain two draft points, one sub modified form of'my invention in which the draft connection is adapted to be connected directly to a cross clevis 9.4, which. is directly connected to the plow beams 6 and 7. In this modification the only change necessary is to provide a bolt 25 which extends through the member 13 and through one of the series of holes in the clevis 24:, so that thecompression produced by the lan dside end 15 of this member 13 bears back against this clevis through this bolt connection, instead of by means of the compression of the bearing 16 against the head of the plow, as shown in Fig. 1. Otherwise, the operation of this de vice is substantially the same as that already described.

It will thus be seen that I have devised a draft connection in which all side draft on the plow is eliminated. "With my connec tion there is no side thrust on the end of the beam toward the furrow as all parts of this connection pull toward the land and in turn pull the front end of the plow toward the land. When draft is applied the connecting links 22 and 23 try to straighten, and they in turn exert a side pull toward the land on the bolt 12, which is in turn car ried to bolt 9. It will thus be seen that I iave devised a very eflicient draft connection, and while I have illustrated certain specific embodiments of my invention, it will, of course, be understood that I do not wish to be limited to the exact construction shown and described, but that various modifications and changes will readily suggest themselves to those skilled in the art and still come within the contemplated scope of my invention.

What I claim as my invention is:

1. In a device of the class described, a furrow beam and a. landside beam, a cross member connecting said beams, an evener bar offset toward the right hand side of said beams, a draft connection connected at midpoint of said evener bar, said draft connection comprising a main member pivotally connected to said cross member at a point substantially in line with said furrow beam, and transverse arms pivotally connected to said main member, one of said arms being connected to said evener bar, and the other of said arms being connected to the landside of said transverse member and means for producing a side pull toward the land.

2. In a device of the class described, a furrow beam and alandside beam, a cross member connecting said beams, an evener bar oifset toward the right hand side of said beams, a clevis connected to the midpoint of said evener, an arm pivotally connected to said clevis and extending toward the furrow side, a main member connected to the furrow end of said arm, the rear end of said member being pivotally connected to the land sideend of said cross member, and a second arm extending substantially parallel to said first arm and pivotally connected to said main member, and a 'rearwardly and landwardly extending link nivotally connected at its opposite ends to said arms and means in said connection for transmitting the pull on said evener to a point at or near the land side beam.

3. In a device of the class described, a furrow beam and a landside beam, a cross member connecting said beams, an evener bar offset toward the right hand side of said beams, a clevis connected to the midpoint of said evener, an arm pivotally connected to said clevis and extending toward the furrow side, a main member connected to the furrow end of said arm, the rear end of said mem her being pivotally connected to the landside end of said crossrmember, a second arm extending substantially parallel to said first arm and pivotally connected to said main member, a rearwardly and landwardly eX- tending link pivotally connected at its oppo- I site endsto said arms, and a second link connectionfrom a midpoint of said second ](arm to the landside end of said cross mem- Signed by me at Harcourt, Iowa, this 17th day of March 1914:.

JOSEPH W. GAMBLE. Witnesses:

B. F. HULL, O. 'I. ENe UIs'r.

Copies of this patent may be obtained for five cents each, by addressing the commissioner of Patents,

"Washington, 11.0. 

